Acetylene-gas generating machine.



NQ. 829,674. PATBNTED AUG.'28, 190s. A. B. SGHLIBDER, AGETYLENB GAS GENERATING MACH 'APPLIUATIN FILED JULY 5. 1904.

PATENTED AUG. 28, 1906.

A. E. SCHLIEDER.

GAS GENERATING MACHINE. APPLIUATION FILED JULY 5. 1904.

AGBTYLENE" 7 SHEBTS-SHEBT 2.

No. 829,674. PATENTED AUG. 28, 1906.

A. E. SCHLIEDER.

AUETYLENE GAS GENERATING MACHINE. APPLIOATION FILED JULY 5. 1904.

7 SHEETS-SHEET 3V PATENTED AUG. 28, 190s.

A. E. sGHLEDR. ACBTYLBNE GAS GENBRATING MAG EINE.

APPLICATION FILED JULY 5, 1904.

7 SHEETS-SHEET 4.

PATBNTBD AUG. 28, i906. A. E. SGHLIBDBR. AGETYLENB'GAS GBNBRATING MACHINE.

APPLICATION FILED JULY 6. 1904.

7 SHEETS-SHEET 5.

PA-TENTED AUGl 28, 1906.

A. E. SCHLIEDER. ACETYLENE GAS GBNERATING MACHINE.

E19/H170 71. I

PATENTED AUG. 28, 1906.

` A. E. SGHLIBDBR.

AGBTYLBNB GAS GBNBRATING MACHINE.

. APPLICATION FILED JULY 5. 1904.

7 SHEETS-SHEET 7.

' tors in connection lwith a `single gasometer.I

narran STATES 'PATENT ermee..

AUGUSTUS sonLiaDEa, or BUFrALo, New IYORK, ASSIGNOR. To.

MoNAacn Aca'rrL'ENE GAS COMPANY, oFoMAHA, NEBRASKA, A ooRroRA'rioN or NEBRASKA.

AoETYLENE-eAs-GNERANNQ MACHINE.

Specicaton of Letters Patent.

Patented Aug. 28, 1906.

.Mylication filed July 5, 1904. Serial No. 215,345.

To' n/l. rtf/1,0117, it may concern:

Be it knovvn that l, AUGUSTUS E. SCHLIE- DER, a c'rtizen of the United States, residing at Bul'alo, in the county of Erie and State of Newk York, have invented certain new and useful Improvements in AcetyleneGasGen erating Machines, of which the following is a specification.

My invention relates 4to acetylene-gas-gen- @rating machines of that type in which calcium carbid is automatically fed to the Waterreceptacle of the gas-generator.

' The objects of my invention" are to automatically feed a predeterminedquantity of calcium carbid into the generating-chamber for the generation of gas, the mechanism controlling the. feed being actuated by the rise and fall of the gasometer to provide an o en fed and which is submerged into the water in the receptacle; toI provide means for discharging a quantity of the water and sediment in the receptacle from the lowest point thereof and to provide means for replenishing the receptacle with a like quantity of fresh water.; to providemechanism intermediate of the valve controlling the 7feed of calcium carbid andl the gasometer, whereby. the said valve is actuated to deposit a quantity of carbid in the generator when the gas-bell of the gasometer reaches a predeterminedl point,

. and to otherwise improve on acetylene-gas-- generators now in use.

With these objects in view the invention consists in the peculiar construction, coinbination, and .arrangement of parts to be hereinafter described, and particularly pointed out in the appended claims. g

In the accompan ing drawings, Figure 1 is a iront elevation o my improved acetylenegas-generating machine; showing two genera- Fig. 2 is a central vertical sectionv of the gasometcr and one ofthe gasgenerators. Fi 3 is a horizonta-lisection taken on line 3 3, 2. Fig 4 is a horizontal section taken on line 4 4, Fig. 2. Fig. 5 is a horizontal section taken on line 5 5, Fig.7. Fig. 6 is a detached perspective viev'vof the bucket-valve.. Fig. 7 1s an"enlarged fragmentary vertical section through one of the gas-generators on -line 7 7, 2, the bucket-valve controlling the feed of carbid being open to receive a supply of car.-u

showin cross-section.

bid. Fig. 8 is a similar view, the bucket Valve being closed and the contents thereof discharged. Fig. 9 is a vertical section taken online 99, Fig.'7. Fig. 1'0 is an enlarged vertical section of one 'of the measuring discharge-receptacles vand the adjacent portion of the gas-generator towhlch it is attached, the inlet of the receptacle being closed and the outlet thereof open. Fig. 1l is a similar viewof the said receptacle, the inlet tlicreoic being open and theoutlet closed. Fig. 12 is a vertical'section taken on line 12 12, l* ig. 10. Fig. 13 is a vertical` section taken on line 13 '13, Fig. 11. Fig. 14 yis a detached perspec `tiveview of thev flap-valve, one being pro* vided in each generator for closing the waterinlet thereof. Fig. 15 is an enlarged vertical l v,section of one of the o en receptacles or basreceptacle' into which the calcium earbi is ket into which the vca cium carbidis` deposited.. Fig. 16 is a horizontal section taken on line 16 16, Fig'.l 15. Fig. 417 is a side. ele- -vation of Athe mechanism controlling the actuation of 'the bucket-valve of one generator and a verticalsection of the controller-rod4 securedto the gasfbell, the parts'being shown as they appear when` the gasbell reaches a predetermined point, at"l which time the bucket-valve is actuated to dischar e its contents. 'Figx 18 is a similar view, t e several parts beiner shown as they appear when the gas-bell istbeing' elevated. Fig. 19 is a side elevation of the said controlling mechanism, the several' parts as they appear when a out to actuate the bucket-valve so as to receive a new charge ofcarbid. Fig. 2()

is a similar view showing the several parts of said controlling mechanism als they appear when the'bucket is actuated to receive'a new charge of carbid, the parts remaining .in such position until the gas confined in the gasometerv is almost entirely consumed.. Fig. 21

is atop plan view of thel controlling mechanism, showing the same in coaction with the controller-rod, the latter being shown in Fig. 22 is a rear elevation of Fig. 23 is an lenlargedvertical-section takenon line 23 23, Fig. 17. Fig. 24 is an enlarged vertical secthe controlling mechanism.

tion taken vonline 24 24, Fig. 21. Fig. 25 is ari-enlarged horizontal sectiontaken on' line 25 2a Flg. 1s. zontal 'section taken on line 26 26, Fig. 20.

Fig. v26 is an enlarged horiJ' "I G5 27 is an enlarged transverse section taken IOO on line 27 27, Fig. 22, the parts being shown in the positions they assume when the gasbell is at its lowest point. I Fig. 28 is a similar view, the parts being in the` positions they assume when the gas-bell approaches or is aty its highest point. Fig. 29 is a vertical section taken on line 29 29, Fig. 25. Fig. 3() is a side elevation of a modified form of valvecontrolling mechanism, the several parts thereof-being yshown as they appear when the gas-bell reaches' a predetermined point, at which time the bucket-valve is actuated to discharge the contents thereof. Figs. 31 and .32 are similar views with the parts ofthe mechanism shown in different positions.

Fig. 33 is an enlarged section taken on. line,

33 33, Fig. 31. Fig. 34 is an enlarged ,top plan View of the controlling mechanism, the parts being shown as they appear in Fig. 30. Referring .to the drawings 'in detail, like letters of reference refer to like parts in the several fi ures.

The refbrence-letter A designates the gasgenerators, which are arranged on opposite sides. of thegasorneter B.. The `,gasometer is of the usual; type, comrising a suitable fluid or sealin rece taclev i; ier sulitablev containingwater, oil, or an. ot fluid and a gas-bell or holder ,which has its lower open end submerged in the `fluid within said receptacle and rises and falls in. accordance with the gas-pressure. Gasfsupply pipes b2 connect the gasometer Withhoth gasgenerators. The gas after entering the gasometer passes through a tubeC and `enters the gas-bell,.from whence it is led through a filter C to andvthroughA the. general .supply-.

pipe C2, which may e led` to any -suitable pointl or ,points-for consumption. These` parts, however, .may be otherwise constructed and arra ed,.`as they form hopartof this invention..` i ecured to. the gas-bell .b at

diametricallyv opposite points, so as .to .rise and fall. with the same, are two controllei.

rodsC3, each being provided withv a vertical slot c and designed to actuate the valve-controllin .-mechanism, to be hereinafter dcscribe Each gas-generator A comprises. a gener.-

ating-chambcr D, of any suitable shape and having by preference an inclined bottom D., with its lowest point at that side nearest the gasometer. Mounted on each generating-- chamber D is a carbid-receptacle, connected withsaid-.generating-chamber by a neck E', forming. a passage betweenI the.v two.. Each carbid-receptacle has a suitableopeninge at -itsiipperend, through which the carbid is introduced, and each opening is pro-- vided with a suitable closure e. The lower endof each of said receptacles is made hop.-r per-like, as shown at e2. Thelowel'. hopperlike end ofeach carbid-receptacle is provided witha supplemental or inner wall e, which consists of three overlapping sections e, separatedfrom the outer wallof` the hopper for about three-quarters of its circumference by separators c5, said sections with a portion of the outer wall, serving as the confining-wall for the carbid. ',An inclined extension cf is held between the neck of the generator and the carbid-receptacle and forms a continuation of a portion ofthe outer`wall of the hopper. The purpose of the inner wall is to reduce the discharge-opening in the hopper 'without reducing the diameter of the neck to conform thereto, thus allowing the necessary space for free actionof the bucket-valve, to be presently described...

ln order to prevent packingof thecarbid at the lower end of the hopper, cross-bars e7 are placed within the latter near the. lower end thereof, said cross-bars being bypreference V-shaped in cross-section and serving to loosen and deflect the pieces ofcarbid from a' direct course tothe discharge-openin thus preventing. packin of. the carbid. the hopper-like en s of. the carbid-receptacles are bucket-valves F, which are secured to rock-shafts F', journaled inthe walls of the necks E and in brackets'F", secured tothe generating-chambers.. Each of said bucketvalves comprises a bottom f, sides. f anda 'curved end wallf", thelatter serving as the valve portionto closethe outlet ofthe carbid-receptacle. The curvedend ywalls f2 of the bucket-valves liein contact with the extensions e", but are separated from* the end ofthe inner Walls by a space es.. Ai' stop e is secured to the inner side of each. neck, against which the bucket-valves bear when in a posilosing IOO tion Ito receive a charge-,of` carbid,.ser.ving to further prevent packing of the carbid.

Supported on, theup erelid of .each gasgenerating chamberan ,extending into the. same, so asl to be partlysubinerged in :the

water; therein,.is an.y o er1-work basket or re-y ceptacle .G, formed-o Wovenwire or-\ other suitable material,y into. which `the lcarbid is deposited las it leaves the bucket-valveF: Each of said baskets or. receptacles coinprises a cylindrical bodyportion g and a lat- `eral..eirtensi'on g, having its. top andv end cured to a rock-bar J 2, the saidrock-bar .and

the yoke J being loosely mounted on said Formed in the yoke J at opporock-shaft. site. sides of the rock-shaft are two curved Seach slots y', through which and apertures j', formed in the operating-lever J, securing- /bolts j pass. This construction permits the b'ell, as "will be understood by reference to the o eration hereinafter referred to. The

' lthe bracket' Ff rock-l ar J 2 is provided'at opposite ends with notches ja, which are adapted for engagement with pins lc, projecting from opposite -sid'es of two vertically-movable stop-bars K K. The

latter are guided in their movements within :a `rectangular ra'me L, 'which is supported by in anyapproved manner and comprises bypre'ference' two parallel bars Z, connected at their. endsby bolts Z,'passing one of its cndp v said trip-lever and itskother end attached to through'tlie salmean df the separators Z2., in-

terp'osed between said bars to form an intervening guide-space. l3, in which said stopbarsare confined* Aiivixed to the rock-shaft F origfthelpposite side ot said'vlock-bars is a rock-'barI .sinilar to the rock-bar J. The rock-bar M is disposed in a plane atzan angle to the' lanefinwhich the rock-bar J2 isheld and`,-'li e, thelattenis/ provided at each end with a notchffm for engagement' with the pins 7c. v

Secured toil-the rock-bar J:e at 'opposite ,sides of the-rock-shaft are two verticallyn ovable trips ,N N', eachbeing provided i ith 'a slot "fr, through which a securing-bolt .n passes and enters the lock-bar. 'NZ is a trip-lever pivotall attached between its ends tothe framel and having africtionroller n at its upper end, which is positioned in the path of the -trips'N N. By adjusting. the latter -on the rock-bar J2 they may be brought. into contact with the trip-lever N2 sooner or later inthe movement of the said rock-bar.` AL retractile sptingxrta, having one attached to the lower end of the bracket F2, tends to'maintain said triplever in a perpendicular position.

Thejstog-bars K K', which are arranged' in line wit andon opposite sides of thetrip- :lever N2, are each provided with an inwardlyextending'ear 7c', against which :it different .times the trip-lever N2 strikes to-releaseithe stop-bars from their locked positions. The said trip-lever N2 is adapted to be actuated by the trips N N when the rock-b'arJZ, carrying the latter, is moved tortliefull extent of 'its movement inv either direction. A retractile spring Istrie secured with one end to the lower end of each stop-bar and with its other end to a suitable fixed point, as at k, tending4 to draw said stop-bars down. Each stop-bar has its inner edges notched, as at 7st, for engagement with stop-pins O, secured to brackets 0.', alixed to the'frame li,

' The free end of the operating-lever J is at all times held in operativo engagement with the controller-rod C3. As shown in'Fig. 17, the operating-lever J is in a predetermined position and bears against the lower end of the slot c in the controller-rod C3. rlhis is the position of the controller-rod with refer- 'ence to the rock-shaft when the gai-bell approaches its lowermost position. At such times the rock-bars J 2 and M are parallel and 4the notches therein engage the pins projectlever is attached to` the rock-bar J2 throughv the medium of `the yoke J the said lock-bar is moved with the operating-lever. During this movement ot the operating-lover and therock-bar J2 the trip N on the latter is movedl out of contact with the trip-lever N2, which permits the latter to be drawn into a vertical position by the spring nu. The operating-lever J continues to risewith the controller-rod C3 and through the medium of the rock-bar J2 causes the lock-bar K to to be elevated until'the coactingr stop-pin O engages the notch tft in said lock-bar,. as shown in Fig. 19. v Before the vsaid lock-bar is looked in the manner described the trip N is brought in contact with the trip-lever N2, causing the lower end of the latter to strike the ear 7c of the stop-bar K and torce the latter outward until the notch 7c4 inthe said stop-bar is free of its.coacting stop-pin O, which occurs simultaneously with thelocking of the stop-bar K. At the Sametime the operating-lever J leaves the slot c in the controller-rod C3 and the free end of the said lever bears against the inner or rear face ofthe said rod. Further elevation of the controller-rod does not affect the operating-lever' and the parts of the controlling mechanism remain in the positions 'shown in Fig. 2() untill the gas-bell drops and the tree end of the operating-lever J again enters the slot c in the controller-rod Q.4 'When thc lock-bar K is being elevated,as described, the lock-pin 7 at the upper end thereof leaves the notch m inthe rock-bar M and the latter retains its position until the lock-bar K is released,

vwhen the downward movement ot thclatter causes the rock-bar M tomovc from position shown in Fig. 17 to that shown `in Fig. 20, and in so doing the rock-shaft' l", to which the rock-bar M is ailixcd, is revolved and thelbucket-valvc F, which-closes the lower end of the carbid-receptacle. as shown in Fig.v 8, is moved into the position shown in Fig. 7 thereby opening the lower 'end ol the carbid-receptacle and receiving a quantity of-carbid which is to be discharged into the .generating-chamber at thel pro,` `r time.

IOO

IIO

IIS

xEi

When the free end of the operating-leverd Aventers the slot c in the controller-'rod C3, which occurs when the gas in the gas-bell is being consumed and the latter drops gradually, the said lever will remain in contact with the lower end of said slot and drop with the controller-rod. During the downward movement of the operating-lever the rockbar J'l is moved Afrom the position shown in Fig. 20 to that shown inFig. i7, the rock-bar JZ disengaging itself trom the lock-bar K, while causing the lock-bar K to be elevated. The movement of the rock-bar J2 causes the trip N to engage the tri -lever N2, and the latter in turn engages tlie lock-bar K and causes the latter to become disengaged from its coacting lock-pin to permit ot' its being drawn down by the spring K2, connected thereto. The said spring causes the rockbar M to be moved by reason of its connection with the lock-bar K, thereby rocking the shaft F and moving the bucket-valve from the ositionshown in Fig. 7- to that shown in l1 ig, 8, at which time the generatingchamber is supplied with the necessary quantity of carbid, which is discharged Afrom the said bucket-valve.

Secured to the generator and communieating therewith is a measuring dischargechaniber P, which has its upper wall even with the lowermost point of the generatorbottom. A water-inlet 'p is provided, which is adapted to be closed by a valve p to prevent the. flow of Water from the generatingchamber to the said discharge-chamber. The bottom of the latter is provided with an outlet p2, adapted to be closed by a valve p3,

having an upwardly-extending valve-stem p4, which is guided in a suitable guide 111"', secured to the wall ofthe chamber. LX- tending from the top wall ot' the dischargecharnber to within a short distance 'of the rock-shaft F is a tube Q, through which a rod R passes and has secured to its lower end by any suitable means a connector S,

by means of which the'valvesl p and p are.

connected together and to the rod R, which latter is adapted to actuate the said valves. The valve 7) has a valve-stem p", which is suitably guidedy and has two nuts p7 secured thereon. forked to straddle the valve-stern p and lic between the nuts p7, and it is fulcrnnied between its ends to a bracket s', secured to the upper wall of said discharge-chamber. The other end of said lever enters a slot r formed in the connector S. The latter is provided with a center bore r, in which the st'em of the valve p is guided. intersecting the bore 7""of the connector S is n. slot 7', which extends through said connector and in which the ends of a guide-pip r", which projects from opposite sides of the valve-stem p4, is confined. 'lhc'said guidepins serve a y means to`prevent Itnrningof the valve and A lever s has one of its ends in preferred form consists of a screw t', passing through said slot and entering a threaded aperture in the link. The latter is bent upon itself at its lower end, as at t2, and has an aperture formed therein through which the upper end of the rod it The said end of the rod is screw-threaded and has two nuts t screwed thereon, one above and the other beneath said bent lower end of the link T, sufficient play being allowed the link between the said nuts to adjust itself to the varyin conditions which are caused by the lever swinging through an are of a circle. The connection oi the rod R with the rock-shaft as described causes the said rod to be moved upward when the gas in the gas-bell is about consul-ned and the bucket-valve is tilted to discharge a quantity of carbid into the gener-l ating-chamber, an at such times the valve p is closed through the medium of the lever s, while the valve p3 is opened to permit the vwater in the disc large-chamber.to vbe discharged. When gas is being generated end the gas-belllis caused to rise by the gas entering the gasometer, the rock-shaft .it is' revolved when the gas-bell reaches a certain point. This action of the shaft causes the rod R to lower, and in so doing the valve p gravitates to its scat and closes theV dischar eopening in the dischargechamber, a ter which ilic valve p iselevated and opens the -inlet p, thereby allowing a quantity of the water from the generating-ehamber to enter the discharge-chamber, from which latter it is discharged when the gas-bell approaches its lowermost point. A

As a certain quantity of wateris desirable at all times in the gas-generating chamber, provision must be made to supply the exact f uantity discharged through the measuring discharge-chainber. This do by placing into servico a float-controlled watercharnber U, which is preferably secured to the wall of megas-generating chamber, and leading to and from thesanie is a water-supply pipe u, which terminates in the gas-generating chamber and has an inwardlyawingin2g` flap-valve u secured thereto, which is nor- 1n ally held against the end of the said pipe by.

l.ter andthe sediments are c ischarged'into the disel'iargechamber the water in the generator lowers until the level thereof is below the 1gov valve u', at- -which time the water from the tank U enters the'generator, supplying a measured quantity to. bring the level of the water to the desired point.

The modifed'form of controlling mechanism illustrated in Figs. 30 to 34, inclusive, is provided with' rocking members and stopins which, like similar parts in the controlling mechanism above described, serve to control the movement of the'shaft Fi, to which the bucket-valve F is secured. In this modified construction the operating-lever J is tulcrumed on the shaft F 4and is adjustably secured to a rock'member V by means of a bolt'.

o passing through a segmental sloto and cn-l tering the said operating-lever. Secured to laterally-projecting lpins o", arranged on the rock member V, are two substantially U- "shaped springs 'v3 c, arranged on a plane in which a weighted lever W is held, said lever being losely mounted on the rock-shaft, so as to swing thereon.. A stop member WV is secured to the shaft F adjacent the weighted lever W and is providedwith two segmental slots w', in eachof which a stop-pin 102.103 is adjustably held.4 As `shown in Fig. 30, the

'. lever W is. adapted to bear against the sto pin Wand the spring v3, located between tne rock-shaft and the controller-roda, when the as-bell is in its lowermost position, at

l l. Whic 1 time, hereinbefore stated, the .bucket-valve is in a position it assumes after having discharged a quantity of carbid into.

the generating-chamber for t-he generation of gas, by the introduction of which latter into thegasometer the gas-bell is elevated, there by causing the operating-levt-rd and its connected parts to rock on the shaft F. B this action the weighted lever W, throng 4the medium of the spring '03, is raised and moved away from the stop-pin 1122 the said' spring moving the lever W beyond a vertical position when the end of the operating-leverA J leaves the slot in the controller-rod, which. `45, permits said weighted lever to gravitate against the opposite spring o4, placing the latter under tension and striking against the st p-pin w3, thus causing the stop member W and the rock-shaft F to rock, whereby the bucket-'valve F is moved to the position shown in Fig. 7.

Having thus described my invention, what l. claim is 1. In a gas-generating machine, the combination with the gasometer, of a generatingchamber, a discharge-receptacle having an inlet connecting said receptacle with the generating-chamber, and having also an outlet., avalve for said inlet, a valve for said outlet, a connector connect-ing said valves tocause either one to close when the other opens, and operative connections between said connector and the gas-bell ol' lthe gasometer whereby said valves are, actuated by the movement of said gas-bell.

.of the center of said hopper an 2. In a gas-generator, the combination of ter entering the generating-chamber at a point below the level of the water, and a valve insaid generating-eheuber and closing the said outlet-pipe, said valve being normally closed and adapted to open when the pressure of the water in theV generating-chainber against the same is less than the pressuro of water in the said outlet-pipe.

3. VIn' a gas-generating machine, the combifiion of a generating-chamber, a discharge-receptacle having an inlet loading to said generating-.chaniber and having also an outlet, a valve for said inlet, a valve for said outlet,- a connector having a diametrical slot, a center bore below saidslot and a second slot intersecting said bore, a lever pivoted between its ends and having one end thereofA entering the first-mentioned slot in said connector Vand the other end thereof operatively connected to the inlet-valve, the said outletvalve having its stem entering said bore and being provided with a pin which extends therefrom and entersthe slot intersecting said bore, and means for operating said connector to Vcause either one of said valves to open when the other closes. e

4. In a gas-generating machine, the combination of a gas-generating chamber, a-susai generating-chamber by a neck portion and having a hopper-shaped lowerend provided with an inner wall arran fed to one side d having a portion of the outer wall serve as a continuation of the inner wall, said inner wall projecting into said neck portion and serving to form a contracted opcnin an extension at one side pro'ecting belowt e lowerend of the inner wall, and a bucket-valve comprising. a bottom, sides and a curvedend wall servingas a valve-plate, said valve-plate bearing against the lower end of said extension, and being separated from the lower end of the inner wallA by an intervening space` 5. Ina gas-generating machine, the combination .of a gas-generating chamber, a superposed carbid-receptacle having a hopperlike lower end and an ou tlet at said lower end, the wall at one side of said outlet extending below the whll at the opposite side, a bucketvalve -havinfg a curved valve-plate and being capable oi retaining a quantity oi carbid when opened, said valve-plate acting against the lowest point ol said hopper-like recepperiosed carbid-receptacle connected with IOC tacle and beingseparated trom thewall at v of a generator having a valve controlling the.

supply of carbid thereto,

saam/i a shaft. on which l cured to said operatingdever, a rockbar sesaid valve is allixed, a slotted controller-rod cured to the shaft, stop-bars having each a l secured tothe gas-bell and inoving therewith,

an operating-lever luleruined on said shaft and adapted for engagement with said slotted controller-rod, a rock nieinber.loosely mounted on said shaft and having the inner end of the operating-lever secured thereto,

and'a stop inelnber adapted `to benctuated by the movement of said rock member and serving to rock the said shaft.

7. lny a gas-generating machine, the eombination with the gasometer having the usual gas-bell, of a generator having a valve controlling the supply of' carbid thereto, a shaft to which said yvalve is alixed, a controllerv rod secured to and inoyable with the gas-bell and having a vertical slot therein, an operating-lever fulcruined on the shaft and having its free end in engagement with said con- -trollerebaiy' a rock- )ar loosely lmounted on the shaft and being secured to the inner end of said operating-lever, a rock-bar secured to said shaft, vertically-movable stop-bars located between said rock-harsen opposite sides ofthe shaft and adapted to be elevated by the first-mentioned rock-bar, means for holding said stop-bars in an elevated position,

, means for releasing said stop-bars when held in their elevated lpositions, said releasing means being actuated by the first-mentioned roelebar, springs serving to lower said stopbars when'released, and connection between the said stop-bars and the second-mentioned rock-bar, whereby the latter is rocked when said' step-bars are lowered, said stop-bars serving, to rock the last-1nentioned rock-bar .in opposite directions.

8. In a gas-generating machine, the Cornbination with a gasonieter having the usual gas-bell, a generator havinO` a valve controlling the supply of carbid thereto, a shaft to which said valve is alixed, an operating-lever fulcruined on said shaft and having its free end in engagement with the gas-bell sof as to rise and fall with the same, a rock-bar looselyl mounted on the shaft and being sepin projecting from opposite sides thereof,-

said pins bein adapted to engage ,thelast mentioned roc -bar to rock the same and to be engaged by the first-mentioned Arock-bar to cause the stop-bars to be raised alternately, means for holding the stop-levers whenraised av trip-lever adapted to be engaged bythe 4first-mentioned rock-bar to' release th'e stop'- bars when raised, and retractile s rings tending to lower the said stop-bars w )en released by' said trip-lever. 4

.9. In a gas-generating machine, the combination with a-gasometer having the usual gas-bell, a generator having a valve lcontrol- 'ing the supply of carbid there/tde shaft to 'which said valve is affixed, any operating-lever fulcrumed 'on said shaft andhavin its Free en'd in engagement with the gas-bel so as to rise and fall with the saline,` a rock-bai loosely mounted on the shaft .and being secured to said operating-lever, a rock-barl secured to the shaftstopbars.having each a pin projecting 4from opposite sides thereof and a notch .in its inner edge, a frame ih which said stop-bars are. guided, a stop-pin secured .to said-framel for engagement with eac-h of said notches, the -pinsiprojecting from oppo-'i site sides ofsaid stop-bars beingadapted "to engage the last-mentioned rock-bar to Vrock the saine and to be engaged by 'therst-inen- ,tioned rock-bartoicause the stop-bars to be raised alternately, a trip-lever adapted-to be actuated bythe irst-1nentioned rock-bar to cause disengagement of the stop-bars from said stopspins, and retractil'e springs tending tolower the `said stop-bars when released from' the stop-pins.

In Witness whereof Il' have aiiixed my signature in presence of twol subscribing wit/- nesses.

AUGUSTUS VE. SCHLIEDER. Witnesses i CHAs. F. BURKHART, BERT MASON. 

